package main
import (
	"fmt"
)


type Options interface {
	Add(age int) int
	SName(name string)
}




type Student struct {
    Name string
    Age int
}

func (s Student) SName(name string) {
	if len(s.Name) == 0 {
		s.Name = name
	}
}

func (s Student) Add(age int) int  {
	return s.Age + age
}


func main() {
	// var stu Student
	// stu.SName("jane")
	// stu.Age = 1
	var num float64 = 0.1
	msgInfo := fmt.Sprintf("请输入%f为倍数的购买数量",num)
	fmt.Println(msgInfo)
	
}